HD81803 series datasheets. Manufacturer: Hitachi Semiconductor.

HD81803 5 V, single-chip ADPCM transcoder conforming in 40-pin DIP package. Operational temperature range from -20°C to 75°C. Datasheet*) HD81803 5 V, single-chip ADPCM transcoder conforming in 44-pin PLCC package. Operational temperature range from -20°C to 75°C. Datasheet*)

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